Social EngineeringProfessional ServicesProfessional ServicesPhishingStolen CredentialsBECMulti-Stage ChainData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDHighContained

L.A. Tax Service, LLP

bd_e4447cae86149aff · schema v1 · pii pii-v1

Severity

High

Discovered

Sep 15, 2020

Filed

Oct 30, 2020

To disclose

6 weeks

Affected · nationwide

2,6042 in this filing

Linked

4 filings

Confidence

66%

Full breach record for L.A. Tax Service, LLP →

L.A. Tax Service, LLP notified NH AG of a business email compromise resulting from a phishing email. Unauthorized access occurred June-Sept 2020. ~2,604 individuals impacted; data included names, addresses, SSNs. 2 NH residents affected. Notifications mailed by Nov 13, 2020. Remediation included MFA, AV, and credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 106 days

discovery → filing · 6 weeks / 45 days

Jun 1, 2020

Begins

Sep 15, 2020

Discovered

Oct 30, 2020

Filed

vs. sector median

12 wks faster

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Massachusetts State AGbd_0944730271e22f652020-10-30Verified
California State AGbd_8d8eafbb2983339e2020-10-30Candidate
Indiana State AGbd_85c699506a2e623a2020-11-13 · +14dVerified

Name: Wilson, Elser, Moskowitz, Edelman & Dicker LLP
norm: wilson elser moskowitz edelman dicker
Domain: wilsonelser.com

Name: L.A. Tax Service, LLP
norm: la tax service
Industry: Professional Servicesllm

Discovered: Sep 15, 2020
Breach occurred: Jun 1, 2020 – Sep 30, 2020
Undetected for: 106 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 13, 2020
Affected individuals: 2,604state + nationwide
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified NH Department of Justice
Initial access: phishing_link

During the incident: Engaged a specialized cybersecurity firm to conduct a forensic investigation
Changed passwords to its email accounts, computers and servers
Added multi-factor authentication to its email accounts
Installed the Webroot anti-virus on all workstations
Upgrading its email license to include spam filtering
Updated firewall and anti-virus
Provided complimentary credit and identity theft monitoring services for two years
Changes made: Added multi-factor authentication to its email accounts
Installed the Webroot anti-virus on all workstations for centralized management
Upgrading its email license to include spam filtering
Updated firewall and anti-virus
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(45 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGOct 30 · first

California State AGOct 30 · first

New Hampshire State AGOct 30 · first · this page

Indiana State AG+14d

Pattern: first filing Oct 30 (MA), last Nov 13 (IN) — a 14-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://mm.nh.gov/files/uploads/doj/remote-docs/la-tax-service-20201030.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 30, 2020
Raw hash: c877af23531826427d783741512a74147212cfa9d69c6cfcea68ba52a53da1ba

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityWilson, Elser, Moskowitz, Edelman & Dicker LLP

Victim entityL.A. Tax Service, LLP

Incidentdiscovered Sep 15, 2020

Stated responseEngaged a specialized cybersecurity firm to conduct a forensic investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov